• NBN EN 60726 : 2003

    Superseded A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

    DRY-TYPE POWER TRANSFORMERS

    Available format(s): 

    Superseded date:  01-06-2005

    Language(s): 

    Published date:  13-01-2013

    Publisher:  Belgian Standards

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    Table of Contents - (Show below) - (Hide below)

    SECTION ONE - GENERAL
    Clause
    1 Scope
    2 Service conditions
    3 Definitions
    4 Tappings
    5 Connections
    6 Ability to withstand short circuit
    SECTION TWO - RATING
    7 Rating
    8 Rating plates
    SECTION THREE - COOLING METHODS AND TEMPERATURE RISE
    9 Identification according to cooling method
    10 Temperature-rise limits
    SECTION FOUR - INSULATION LEVELS
    11 Insulation levels
    SECTION FIVE - TESTS
    12 General requirements for tests
    13 Measurement of winding resistance
    14 Measurement of voltage ratio and check of voltage
       vector relationship
    15 Measurement of impedance voltage (principal tapping),
       short-circuit impedance and load loss
    16 Measurement of no-load loss and current
    17 Separate-source voltage withstand test
    18 Induced overvoltage withstand test
    19 Lightning impulse test
    20 Partial discharge measurement
    21 Temperature-rise test
    22 Measurement of sound level
    23 Short-circuit test
    24 Tolerances
    SECTION SIX - ENCLOSURES
    25 Degrees of protection provided by enclosures
    SECTION SEVEN - MISCELLANEOUS
    APPENDIX A - Information required with enquiry and order
    APPENDIX B - Climatic, environmental and fire behaviour classes
    Annexes
    Bibliography

    General Product Information - (Show below) - (Hide below)

    Development Note Supersedes NBN C 52 726 (11/2003)
    Document Type Standard
    Publisher Belgian Standards
    Status Superseded
    Supersedes
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